Breakouts:

site type timestamp offset
THL-0085 velocity 2017-01-21 10:00:00 1.68
THL-0085 velocity 2017-02-01 17:00:00 -1.11
OA-0020 velocity 2017-02-14 14:00:00 -1.19
OA-0020 velocity 2017-03-13 06:00:00 1.07

Appendix: A complete list of monitored sites